| 摘要 |
<p>PURPOSE:To indicate the switching operation of the regulator at a place apart from the site of switching by forming an electric circuit, opened and closed by a sensing means which senses the switching operation to the vessel of gas at the side of reservation. CONSTITUTION:When the gas pressure of a vessel is reduced to a value lower than a predetermined value upon supplying LP gas from the using side gas vessel 49 of a LP gas vessel store house 48 to a gas instrument 50, the automatic switching type regulator 51 is operated and the supply of the LP gas is switched to a route from the reserve side gas vessel 52 to the gas instrument 50. At the same time, a reed switch RS is put ON by the approach of a magnet 42 to lighten a red lamp 45 on an indicating box 43 provided in an office 53 and sound a buzzer simultaneously therewith.</p> |
